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Pàgina inicial > Articles > Articles publicats > MoS2 phononic crystals for advanced thermal management |
Data: | 2024 |
Resum: | Effective thermal management of electronic devices encounters substantial challenges owing to the notable power densities involved. Here, we propose layered MoS phononic crystals (PnCs) that can effectively reduce thermal conductivity (κ) with relatively small disruption of electrical conductivity (σ), offering a potential thermal management solution for nanoelectronics. These layered PnCs exhibit remarkable efficiency in reducing κ, surpassing that of Si and SiC PnCs with similar periodicity by ~100-fold. Specifically, in suspended MoS PnCs, we measure an exceptionally low κ down to 0. 1 watts per meter kelvin, below the amorphous limit while preserving the crystalline structure. These findings are supported by molecular dynamics simulations that account for the film thickness, porosity, and temperature. We demonstrate the approach efficiency by fabricating suspended heat-routing structures that effectively confine and guide heat flow in prespecified directions. This study underpins the immense potential of layered materials as directional heat spreaders, thermal insulators, and active components for thermoelectric devices. |
Ajuts: | Agencia Estatal de Investigación SEV-2017-0706 Agencia Estatal de Investigación PGC2018-101743-B-I00 Agencia Estatal de Investigación PCI2021-122092-2A European Commission 754558 European Commission 885689 European Commission 101029727 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Publicat a: | Science advances, Vol. 10, Issue 13 (March 2024) , art. eadm8825, ISSN 2375-2548 |
9 p, 2.3 MB |